Dethernety vs Threagile

Dethernety is an open-source threat modeling platform that represents architecture as a graph for building and analyzing system models. Teams can create and explore models in a browser, from code, or from reports. Analysis follows the architecture graph to examine attack paths, blast radius, and residual risk. Exposures map to MITRE ATT&CK techniques and controls to D3FEND countermeasures for coverage-gap analysis. The platform has JavaScript and TypeScript modules for design, analysis, and issues, plus an OPA/Rego policy engine. Issue modules can connect to external trackers and synchronize remediation work in both directions. Users host their own graph database, with Neo4j and Memgraph listed as options. Analysis can use deterministic queries, single-agent AI acceleration, or multi-agent LangGraph workflows. The open-source edition runs on user-controlled infrastructure and can operate fully offline without cloud calls. The maker says models, data, and findings remain on that infrastructure, and that there is no background telemetry or usage-data transmission. The GUI is aimed at security teams; the CLI supports DevOps, CI/CD automation, and threat-model-as-code. Open Source is free; Enterprise is self-hosted with contract pricing and dedicated support.

Threagile is an open-source toolkit for agile threat modeling. It represents architecture and assets in YAML and checks those models against risk rules, then produces reports of potential risks and recommended mitigations. Mitigation status can be recorded in the YAML model so reports reflect current progress. The toolkit also generates data-flow diagrams and supports Excel and JSON output. Teams can run it from the command line, in Docker, or as a REST server. Models can be edited in developer IDEs and tracked in Git, while custom risk rules can be written as YAML scripts without compiling Go code. A web playground analyzes YAML models and links to schema and API resources; a GitHub Action can run the tool against a repository model file. Threagile is free under the MIT License and supports API, Linux, self-hosted, and web use. The project describes itself as developer-friendly for agile projects and DevSecOps workflows. Its repository says current UI attempts are not ready, and support requests can be raised as GitHub discussions or issues.